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For a stone or a pebble the best method is to use a graduated cylinder and the displacement method. Fill the jar with water to a level so that the pebble can be completely submerged. Read of the volume. Then insert the stone or pebble into the cylinder and read off the new volume. The difference between the two will be the required volume.
However, for a rock the equipment needs to be scaled up and graduated cylinders don't usually come that big. So you will need a bucket or something in which the rock can fit and a tray or large enough container to catch the spill from the bucket (see next paragraph).
Put the bucket in the tray. Fill the bucket with water - full to the top. Then very gently lower the stone into the bucket, catching all the spilling water in the tray. Measure the water in the tray using whatever measuring equipment you can get hold of. That is the volume of the rock.
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What did Archimedes find?
He discovered the method to calculate the volume of a irregular object (rock).
What is the method that you use to find the volume of a pebble?
put some water in a measuring cylinder, take the reading and then place the pebble in the water and take over the reading.Then you minus the two values to get the volume of the pebble\rock
How do you find mass of a rock by its density?
Determine its volume by how much water it displaces, then divide mass by volume
How would you find the volume of an irregular shaped object like a rock?
You would measure the length width and heighth. Then you would multiply them all together. <><><> A better means would be to have a container that the rock will fit in, and fill it full of water. Place the rock in the container, which will overflow. Then remove the rock, and measure the volume of water you have to pour into the container to make it full again. The volume of the water will equal the volume that was displaced by the rock.
What is the volume of a rock with a density of 3.00 g cm3 and a mass of 600 g?
Well, sweetheart, to find the volume of that rock, you divide the mass by the density. So, 600 g divided by 3.00 g/cm3 gives you a volume of 200 cm3. Voila, you've got your answer!
